B2 verb /rɪˈvɜːrt/

revert

恢复

Meaning

to return to a previous state, condition, or practice

Example

The system will revert to its original settings after the update.

系统将在更新后恢复到原始设置。

B2 noun /rɪˈsɪp.i.ənt/

Recipient

接收者

Meaning

a person who receives something

Example

She was the recipient of the prestigious award.

她是这个著名奖项的接收者。

B2 noun /ˈrerəti/

Rarity

稀有的状态; 不常见或稀缺的东西

Meaning

the state of being rare; something that is uncommon or scarce

Example

The antique vase was a rarity worth thousands of dollars.

古董花瓶是一种稀有物品，价值数千美元。

B2 noun ˌrɛvəˈluːʃən

revolution

革命

Meaning

A forcible overthrow of a government or social order, in favor of a new system.

Example

The story is set during the French Revolution.

故事发生在法国大革命期间。

B2 noun /ˈruːdnəs/

Rudeness

粗鲁

Meaning

the quality of being impolite, discourteous, or offensive in behavior or speech

Example

His rudeness shocked everyone at the dinner party.

他的粗鲁在晚宴上震惊了所有人。

B2 adverb /rɪˈspektɪvli/

Respectively

分别；按照给定的顺序；分开且按已经提到的顺序

Meaning

in the order given; separately and in the order already mentioned

Example

John and Mary are 25 and 30 years old respectively.

约翰和玛丽分别是25岁和30岁。

B2 noun /ˌrɛvəˈleɪʃən/

revelation

启示

Meaning

A surprising and previously unknown fact, especially one made known in a dramatic way.

Example

The book was full of shocking revelations about the politician.

这本书充满了对政治家的震惊启示。

B2 adjective ˈræd.ɪ.kəl

radical

能够带来根本性变化，反对传统的信仰或系统

Meaning

Capable of bringing fundamental changes opposite to conventional beliefs or systems.

Example

The leader proposed radical economic reforms.

领导人提议进行激进的经济改革。

B2 noun /rʌst/

Rust

铁锈

Meaning

reddish-brown coating formed on iron or steel by oxidation; corrosion

Example

The old car was covered in rust after years of neglect.

那辆旧车在多年忽视之后被铁锈覆盖。

B2 noun /rɪˈzembləns/

Resemblance

相似

Meaning

the state of being alike or similar; similarity in appearance or character

Example

There's a strong resemblance between the two sisters.

这两个姐妹之间有着强烈的相似性。

B2 verb /ˌriːəˈreɪndʒ/

rearrange

重新安排

Meaning

to change the order or position of something

Example

She decided to rearrange the furniture in her living room.

她决定重新安排客厅里的家具。

B2 noun /ˈrɛzərvwɑːr/

reservoir

水库

Meaning

A large natural or artificial lake used as a source of water supply.

Example

The city built a new reservoir to ensure enough drinking water for its residents.

这座城市建造了一个新的水库，以确保为居民提供足够的饮用水。

B2 adverb /rɪˈlʌk.tənt.li/

Reluctantly

不情愿地

Meaning

in an unwilling manner; with hesitation or resistance

Example

She reluctantly agreed to help with the project.

她不情愿地同意帮助这个项目。

B2 noun /rɪˈfɔːr.mər/

Reformer

改革者

Meaning

a person who works to bring about positive changes in society or institutions

Example

The social reformer dedicated her life to improving education for all children.

社会改革者致力于改善所有儿童的教育。

B2 noun /ˈrɛlɪvəns/

relevance

robber

强盗

Meaning

a person who steals property from others, often using force or threat

Example

The robber was caught after a quick police chase.

经过警方的快速追捕，强盗被抓住了。

B2 verb /rɪˈfreʃ/

refresh

使清新

Meaning

to make fresh again; to restore energy

Example

A cold drink refreshes me on hot days.

冷饮在炎热的日子里让我感到清爽。

B2 adjective /ˈrɪtʃ.u.əl/

Ritual

仪式

Meaning

relating to religious or ceremonial practices

Example

The wedding ceremony included many traditional ritual elements.

婚礼仪式包括许多传统的仪式元素。

B2 verb /reɪn/

reign

统治

Meaning

to rule as a king or queen; to be dominant

Example

The queen reigned for over sixty years.

女王统治了超过六十年。

B2 adjective /ˈræʃ.ən.əl/

Rational

理性; 合理; 逻辑

Meaning

based on reason and logic; sensible and practical

Example

She made a rational decision based on the available facts.

她根据可用的事实做出了理性的决定。

B2 verb /rɪˈliːv/

relieve

Meaning

to make pain, distress, or difficulty less severe or serious

Example

The medicine helped relieve his headache.

B2 noun ˈrɛvənuː

revenue

收入

Meaning

Income, especially when of a company or organization.

Example

The company's revenue grew by 10% this year.

公司的收入今年增长了10%。

B2 verb /ˈrʌm.bəl/

rumble

幸福

Meaning

to make a continuous deep, resonant sound

Example

Thunder rumbled in the distance.

当她收到奖项时，她无法隐藏自己的幸福。

B2 verb /ˌriː.ɪnˈfɔːrs/

reinforce

加固

Meaning

To strengthen or support something with additional material, people, or effort.

Example

The teacher used examples to reinforce the lesson.

老师使用示例来加固这节课。

B2 adjective /ˈrʌs.ti/

Rusty

生锈的; 不熟练的; 由于缺乏近期练习而受损

Meaning

affected by rust; out of practice; impaired by lack of recent practice

Example

My piano skills are rusty after not playing for years.

我的钢琴技巧生锈了，因为多年没有练习。

B2 noun /rɪˈmaɪndər/

reminder

提醒

Meaning

something that helps you remember a fact, event, or action that you need to do or recall

Example

He set a reminder to call his mother on her birthday.

他设置了一个提醒，提醒自己在母亲的生日打电话给她。

B2 noun /ræntʃ/

ranch

牧场

Meaning

a large farm where animals such as cattle or sheep are raised

Example

They own a huge cattle ranch in Texas.

他们在德克萨斯州拥有一个巨大的牧场。

B2 noun /rɪˌlaɪəˈbɪləti/

reliability

可靠性

Meaning

the quality of being trustworthy or performing consistently well

Example

Customers value the reliability of our service.

客户重视我们服务的可靠性。

B2 noun /ˈrem.ə.di/

Remedy

药物；治疗；补救办法

Meaning

a medicine or treatment for a disease; a solution to a problem

Example

This herbal remedy helps with headaches.

这种草药治疗有助于缓解头痛。

B2 noun /rɛlm/

realm

Meaning

A kingdom or domain; a field or area of activity or interest.

Example

He is well known in the realm of science.

B2 adjective /rɪˈmuːvəbəl/

removable

可拆卸的

Meaning

able to be removed or taken away

Example

This phone has a removable battery.

这款手机有一块可拆卸的电池。

B2 noun, verb /ræmp/

ramp

坡道

Meaning

a sloping surface joining two different levels; as a verb, to increase or rise sharply

Example

The car drove up the ramp into the parking garage.

汽车驶上了停车场的坡道。

B2 noun /ˈrækɪt/

racket

球拍 / 喧闹

Meaning

A piece of equipment used to hit the ball in sports like tennis or badminton; also a loud noise or an illegal scheme.

Example

He bought a new tennis racket for the match.

他为比赛买了一把新网球拍。

B2 noun /ˈruːlɪŋ/

ruling

裁决

Meaning

an official decision made by a judge or authority.

Example

The court’s ruling favored the defendant.

法院的裁决对被告有利。

B2 adjective /ˈrændəm/

Random

随机

Meaning

without pattern or predetermined order; happening by chance

Example

She selected a random book from the library shelf.

她从书架上挑选了一本随机的书。

B2 verb /rɪˈkruːt/

recruit

招募

Meaning

to enlist or hire people for a job, service, or membership

Example

The company is trying to recruit more software engineers.

这家公司正在努力招募更多的软件工程师。

B2 adjective ˌrev.əˈluː.ʃən.ər.i

revolutionary

革命性的

Meaning

Involving or causing a complete or dramatic change.

Example

Revolutionary ideas are reshaping the industry.

革命性的思想正在改变这个行业。

B2 adjective /rɪˈstrɪk.tɪd/

Restricted

有限制的或控制的；受限制的

Meaning

limited or controlled; subject to restrictions

Example

Access to this area is restricted to authorized personnel only.

进入此区域仅限授权人员。

B2 verb /rɪˈkʌvərɪŋ/

recovering

恢复

Meaning

the process of getting better after illness, loss, or difficulty

Example

She is still recovering from the flu.

她还在从流感中恢复。

B2 noun /ˈroʊ.lɪŋ pɪn/

Rolling pin

擀面杖

Meaning

a cylindrical tool used for rolling out dough or pastry

Example

Roll the dough flat with a rolling pin.

用擀面杖把面团擀平。

B2 noun /ˌrɛɡ.jʊˈleɪ.ʃən/

regulation

由权威制定和维护的规则或指令

Meaning

A rule or directive made and maintained by an authority.

Example

Government regulation ensures fair business practices.

政府规则确保公平的商业实践。

B2 noun /ˈraɪdər/

rider

骑手

Meaning

A person who rides a horse, bicycle, motorcycle, or other vehicle.

Example

The rider fell off the horse.

骑手从马背上摔了下来。

B2 noun /rɪˈstrɪk.ʃən/

Restriction

限制; 限定; 控制

Meaning

a limiting condition or measure; the limitation or control of someone or something

Example

There are strict restrictions on smoking in public places.

在公共场所吸烟有严格的限制。

B2 adverb /rɪˈmɑːrkəbli/

remarkably

引人注目地

Meaning

in a way that is worthy of attention or notice; surprisingly

Example

She did remarkably well in the competition.

她在比赛中表现得引人注目。

B2 noun /ˌrek.riˈeɪ.ʃən/

Recreation

娱乐活动; 使某物再次存在的过程

Meaning

an activity that is done for enjoyment; the process of making something exist again

Example

The park provides recreation facilities for children and adults.

公园为儿童和成人提供娱乐设施。

B2 noun ˌreɪdɪˈeɪʃən

radiation

辐射

Meaning

The emission of energy as electromagnetic waves or as moving subatomic particles.

Example

Radiation from the sun can be harmful without protection.

太阳的辐射没有保护可能是有害的。

B2 noun /ˈraɪvəlri/

Rivalry

竞争; 对抗

Meaning

competition for the same objective or for superiority in the same field; the state of being rivals

Example

The rivalry between the two teams made the match exciting.

两个队伍之间的竞争使比赛变得非常刺激。

B2 noun /rɪˈfjuː.zəl/

Refusal

拒绝; 拒绝接受

Meaning

the act of saying no to something or not accepting something

Example

His refusal to cooperate made the project more difficult.

他拒绝合作让项目变得更难。

B2 adjective /rɪˈlaɪ.ənt/

reliant

依赖的

Meaning

depending on someone or something for support

Example

The country is too reliant on imported goods.

这个国家过于依赖进口商品。

B2 noun /ˌriː.əˈʃʊr.əns/

Reassurance

安慰

Meaning

comfort or confidence given to someone to remove their fears or doubts

Example

She needed reassurance that everything would be okay.

她需要得到安慰，以确认一切都会好起来。

B2 adverb /rɪˈpɔːtɪdli/

reportedly

据报道

Meaning

according to what is said or believed, although not confirmed

Example

The company has reportedly agreed to the new terms.

公司 reportedly 已同意新的条款。

B2 verb /rɪˈstrɪkt/

restrict

限制

Meaning

To limit the size, amount, or range of something.

Example

The government decided to restrict the use of plastic bags.

政府决定限制塑料袋的使用。

B2 verb /ˈruːɪn/

ruin

毁灭

Meaning

to destroy or damage beyond repair; to spoil completely

Example

Heavy rain could ruin our picnic plans.

大雨可能会毁掉我们的野餐计划。

B2 verb /ˈræl.i/

rally

Meaning

to come together for a common purpose or to recover strength or spirit

Example

The team rallied after halftime and won the match.

B2 noun rɪˈkruːt.mənt

recruitment

招聘

Meaning

The action of finding new people to join an organization or support a cause.

Example

Recruitment strengthens the workforce.

招聘增强了劳动力。

B2 adjective rəʊˈbʌst

robust

强壮

Meaning

Strong and healthy; vigorous; able to withstand or overcome adverse conditions.

Example

The robust infrastructure ensures reliable communication.

强大的基础设施确保可靠的通信。

B2 verb /riːˈɔːrɡənaɪz/

reorganize

重新组织

Meaning

to arrange something again in a different way for greater efficiency or order

Example

The manager decided to reorganize the team structure.

经理决定重新组织团队结构。

B2 adjective /rɪˈflektɪv/

Reflective

反射的; 沉思的; 能反射光或图像

Meaning

thoughtful; contemplative; able to reflect light or images

Example

After the meeting, he was in a reflective mood.

会议后，他处于沉思的状态。

B2 noun /ˈroʊstɪd miːt/

Roasted meat

烤肉

Meaning

meat cooked by dry heat in an oven or over fire

Example

The roasted meat was perfectly seasoned and tender.

烤肉被完美地调味和变得嫩滑。

B2 adjective /ˌrez.ɪˈden.ʃəl/

residential

住宅

Meaning

Designed for people to live in.

Example

The institution was fully residential.

该机构是完全住宅性质的。

B2 noun /rɪˈbel.jən/

Rebellion

起义

Meaning

an act of armed resistance to an established government or leader

Example

The rebellion against the king lasted for three years.

反抗国王的起义持续了三年。

B2 noun /ˈriːzənɪŋ/

reasoning

推理

Meaning

the process of thinking about something in a logical way in order to form a conclusion or judgment

Example

Her reasoning for leaving was clear and logical.

她离开的推理是清晰和合逻辑的。

B2 verb /rɪˈkleɪm/

reclaim

Meaning

To take back or recover something; to restore to a usable state.

Example

The farmer worked to reclaim the barren land.

B2 noun /reɪˈʒiːm/

regime

政权

Meaning

a system or form of government, often authoritarian

Example

The military regime controlled the country for decades.

军事政权控制了这个国家几十年。

B2 noun /ˈræŋkɪŋ/

ranking

排名

Meaning

a position in a list or hierarchy, especially in terms of performance or importance

Example

His ranking in the competition improved after each round.

他在比赛中的排名在每一轮之后都有所提高。

B2 verb /riːp/

reap

收获

Meaning

to cut or gather a crop; to receive as a consequence of actions

Example

Farmers reap wheat in the late summer.

农民在夏末收割小麦。

B2 adverb /rɪˈɡɑrdləs/

regardless

不管

Meaning

without paying attention to the current situation or condition

Example

She will go to the party regardless of the weather.

她将去派对，不管天气如何。

B2 noun /rɪˈmeɪn.dər/

Remainder

剩余部分; 剩下的东西

Meaning

the part that is left over; what remains after the other parts have been taken away

Example

The remainder of the food was stored in the refrigerator.

剩下的食物被存放在冰箱里。

B2 noun, verb, adjective /ræŋk/

rank

职级

Meaning

A position in a hierarchy; to place in order according to importance or quality.

Example

She quickly rose to a senior rank in the company.

她迅速晋升为公司中的高级职位。

B2 noun /rɪˈmeɪnz/

remains

残留物

Meaning

the parts, pieces, or substances that are left after the rest has been used or removed

Example

The remains of the meal were left on the table.

餐后剩余的食物被留在桌上。

B2 verb /ˈreɡjəleɪt/

regulate

监管；调节；规范；控制

Meaning

to control or maintain according to rules or laws

Example

The government regulates food safety.

政府对食品安全进行监管。

B2 verb /ˌriːəˈʃʊr/

reassure

安慰

Meaning

to say or do something to remove someone's doubts or fears

Example

The teacher reassured the students before the exam.

老师在考试前安慰了学生。

B2 noun /ˈrɪb.ən/

ribbon

缎带

Meaning

a long, narrow strip of fabric used for tying or decoration

Example

She tied her hair with a red ribbon.

她用一条红色的缎带绑住了她的头发。

B2 noun /ˈraɪfəl/

Rifle

步枪

Meaning

a gun with a long barrel that is fired from the shoulder

Example

The soldier carried a rifle during the mission.

士兵在任务中携带着步枪。

B2 noun /ˌrɛprɪzɛnˈteɪʃən/

representation

代表

Meaning

the action of speaking or acting on behalf of someone or something

Example

Her representation of the team was impeccable.

她对团队的代表非常出色。

B2 adjective /ˈreɪsɪst/

racist

种族主义者

Meaning

showing or feeling discrimination or prejudice against people of other races

Example

He was accused of making racist comments.

他被指控发表种族主义的评论。

B2 noun ˌriːkənˈstrʌkʃn

reconstruction

重建

Meaning

The action or process of reconstructing or being reconstructed.

Example

The reconstruction project took years.

重建项目花了几年时间。

B2 noun /rɪˈdʒɛkʃən/

rejection

拒绝

Meaning

the action of refusing or dismissing something or someone

Example

Her rejection of the offer surprised everyone.

她拒绝了这个提议，令所有人吃惊。

B2 adjective /raɪp/

Ripe

成熟的; 准备食用

Meaning

fully developed and ready to eat; mature; ready for action or use

Example

The bananas are ripe and ready to eat.

香蕉已经成熟，准备食用。

B2 adjective /rɪˈlʌktənt/

Reluctant

不情愿的; 犹豫的; 不愿意做某事;

Meaning

unwilling; hesitant; disinclined to do something;

Example

She was reluctant to share her personal information.

她不情愿分享个人信息。

B2 noun /rɪˈstreɪnt/

Restraint

克制; 自我控制

Meaning

the action of keeping someone or something under control; self-control

Example

She showed great restraint in not responding to the criticism.

她在不回应批评时表现出极大的克制。

B2 noun rɪˈzentmənt

resentment

怨恨

Meaning

Bitter indignation at having been treated unfairly.

Example

Resentment grew among the students.

学生们之间的怨恨加剧了。

B2 noun /ˌriː.ɪnˈfɔːrs.mənt/

reinforcement

强化

Meaning

Strengthening or supporting something, especially behavior or learning.

Example

Positive reinforcement helps in learning.

积极的强化有助于学习。

B2 noun /rɪˈlaɪ.əns/

Reliance

依赖

Meaning

the state of depending on something or someone for support or help

Example

His reliance on technology is concerning.

他对技术的依赖令人担忧。

B2 noun /ˈreɪ.dɑːr/

Radar

雷达

Meaning

a system for detecting the presence, direction, distance of aircraft, ships by sending out radio waves

Example

The radar detected an unknown aircraft approaching the base.

雷达探测到一架未知的飞机接近基地。

B2 noun /rʌʃ/

Rush

匆忙; 急促

Meaning

a sudden quick movement toward something; a period of great activity or demand; hurry

Example

There was a rush to buy tickets for the concert.

为购买音乐会门票而匆忙。

B2 noun rɪˈsɛʃ.ən

recession

经济衰退

Meaning

A period of temporary economic decline during which trade and industrial activity are reduced.

Example

The country faced a severe recession due to the financial crisis.

由于金融危机，该国面临严重的经济衰退。

B2 adjective /ˈræp.ɪd/

Rapid

快速的；迅速的；急速的；

Meaning

happening in a short time or at a fast pace

Example

The rapid growth of technology has changed our daily lives.

技术的快速增长改变了我们的日常生活。

B2 verb /rɪˈvaɪv/

revive

复苏

Meaning

To bring back to life, consciousness, or activity.

Example

The paramedics managed to revive the unconscious man.

急救员成功让昏迷的男子复苏。

B2 adjective /rɪˈspɒn.sɪv/

Responsive

响应的

Meaning

reacting quickly and positively; readily reacting to suggestions or changes

Example

The website is very responsive and loads quickly on all devices.

这个网站非常响应，能快速加载所有设备。

B2 adverb /ˈred.ɪ.li/

Readily

乐意地; 容易地; 毫不犹豫

Meaning

willingly; easily; without hesitation

Example

She readily agreed to help with the project.

她乐意地同意帮助项目。

B2 noun /'ræd.ɪʃ/

Radish

小萝卜

Meaning

a small pungent edible root vegetable with white or red skin

Example

The farmer harvested fresh radishes from the garden.

农民从花园里收获了新鲜的小萝卜。

B2 noun/verb /ræft/

raft

筏

Meaning

A flat structure made of logs or planks tied together, used as a boat or floating platform; to travel or transport on such a structure.

Example

They built a raft to cross the river.

他们建造了一只筏子来过河。

B2 verb /rɪˈɡeɪn/

regain

恢复

Meaning

to get back something that was lost; to recover

Example

He regains his strength after the illness.

他在生病后恢复了力量。

B2 verb /rɪˈkɔːl/

recall

回忆

Meaning

to bring (a memory, fact, or situation) back into one's mind

Example

I can't recall the last time we met.

我记不得我们上次见面是什么时候。

B2 noun /rɪˈvaɪ.vəl/

Revival

复兴

Meaning

an improvement in the condition or strength of something; renewed interest in or attention to something

Example

There has been a revival of interest in traditional crafts.

传统手工艺的兴趣得到了复兴。

B2 noun /rɒd/

rod

细长的棒子，尤其是金属或木制的

Meaning

a thin straight bar, especially of metal or wood

Example

He used an iron rod to support the structure.

他用铁棒支撑结构。

B2 noun /rɪˈmuː.vəl/

Removal

移除; 去除; 解雇;

Meaning

the action of taking something away or eliminating it; dismissal from office

Example

The removal of the old furniture took all day.

移除旧家具花了整整一天。

B2 noun /roʊˈteɪʃən/

Rotation

旋转; 转动; 自转

Meaning

the action of rotating around an axis or center; a single turn

Example

The Earth's rotation takes 24 hours to complete.

地球的自转需要24小时才能完成。

B2 noun /rɪˈhɜːr.səl/

Rehearsal

彩排; 演出排练

Meaning

a practice performance of a play, concert, or other work for later public performance

Example

The final rehearsal before opening night went perfectly.

开幕夜前的最后一次彩排非常完美。

B2 adverb /ˈræp.ɪd.li/

Rapidly

快速地; 迅速

Meaning

at a fast speed; quickly

Example

The company is rapidly expanding into new markets.

公司正在迅速拓展新市场。

B2 noun /rɪˈsiː.vər/

Receiver

接收器

Meaning

a person or thing that receives something; the part of a telephone containing the earpiece and mouthpiece

Example

She picked up the receiver to answer the phone call.

她拿起听筒接听电话。

B2 noun /roʊst/

Roast

烤肉

Meaning

Meat cooked by dry heat in an oven or over an open fire

Example

The Sunday roast was perfectly cooked and very tender.

周日的烤肉被煮得非常完美，肉质非常嫩。

B2 verb /rɪˈzuːm/

resume

重新开始

Meaning

to start again after a pause or interruption

Example

We will resume the meeting after lunch.

我们将在午餐后继续会议。

B2 noun /ˌriːprəˈdʌkʃən/

reproduction

繁殖, 再生产

Meaning

The process of producing offspring; the act of copying or duplicating.

Example

The textbook included a detailed diagram of human reproduction.

课本中包含了人类繁殖的详细图表。

B2 noun /ˈreɪn.dʒər/

ranger

巡护员

Meaning

A person responsible for protecting and managing forests, parks, or natural areas.

Example

The park ranger guided the tourists through the forest trail.

公园巡护员带领游客走过森林小道。

B2 verb /rɪˈfreɪn/

refrain

避免

Meaning

To hold oneself back from doing something.

Example

Please refrain from smoking in this area.

请勿在此区域内吸烟。

B2 noun /ˈrest.ləs.nəs/

Restlessness

不安

Meaning

the inability to rest or relax as a result of anxiety or boredom

Example

His restlessness during the long meeting was obvious to everyone.

在长时间的会议中，他的不安对每个人都很明显。

B2 verb /ˈrendər/

render

提供

Meaning

to provide or give; to make or cause to become

Example

The artist renders the scene beautifully.

艺术家美丽地渲染了场景。

B2 verb /ˌriː.kənˈstrʌkt/

reconstruct

重建

Meaning

to build or form something again after it has been damaged or destroyed

Example

The city was reconstructed after the earthquake.

这座城市在地震后重新建设。

B2 noun /ˈruːstər/

rooster

公鸡

Meaning

A male domestic chicken, especially one that crows.

Example

The rooster crowed at dawn, waking up the whole village.

公鸡在黎明时分打鸣，唤醒了整个村庄。

B2 noun /ˈrep.taɪl/

Reptile

爬行动物

Meaning

a cold-blooded animal with scaly skin that lays eggs on land

Example

The lizard is a common reptile found in gardens.

蜥蜴是一种常见的爬行动物，常见于花园中。

B2 noun /ˈrʊki/

rookie

菜鸟

Meaning

a person who is new to an activity or organization; a beginner

Example

The rookie policeman made a few mistakes on his first day.

新警察在第一天犯了几次错误。

B2 noun /ˈrɛlɪvənsi/

relevancy

Ruthless

无情的; 残忍的; 毫无怜悯的

Meaning

showing no pity or compassion; cruel; merciless

Example

The ruthless dictator showed no mercy to his enemies.

那个冷酷的独裁者对他的敌人毫不留情。

B2 adjective /ˈroʊlɪŋ/

rolling

滚动

Meaning

moving in gentle undulations; moving forward by turning over and over

Example

They drove through the rolling hills of the countryside.

他们开车穿过乡村的滚动山丘。

B2 noun /ˈraɪvəl/

Rival

竞争对手; 对手;

Meaning

a person or thing competing with another for the same objective or for superiority in the same field

Example

The two companies have been business rivals for decades.

这两家公司已经是商业竞争对手几十年了。

B2 verb /rɪˈzaɪd/

reside

居住

Meaning

to live or dwell in a particular place

Example

They reside in a large house near the river.

他们住在河边的一座大房子里。

B2 noun /ˈruːmər/

Rumour

流言; 八卦; 新闻

Meaning

a currently circulating story or report of uncertain or doubtful truth; gossip

Example

There's a rumour that the company will close next month.

有传言说公司将在下个月关闭。

B2 noun /ˈrɒbəɹi/

robbery

抢劫

Meaning

the crime of stealing from someone or somewhere using force or threat

Example

The police are investigating the robbery at the local store.

警方正在调查当地商店的抢劫事件。

B2 noun ˌreɪ.di.oʊ.ækˈtɪv.ə.ti

radioactivity

放射性

Meaning

The emission of ionizing radiation or particles caused by the spontaneous disintegration of atomic nuclei.

Example

Radioactivity is used in medical treatments like cancer therapy.

放射性在包括癌症治疗在内的医疗治疗中被用于治疗。